feat: redondeo en el pie de los documentos de ventas y compras (visible según OADM.RoundMthd) y endpoint /api/company/settings

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/api/src/company/company.service.spec.ts

@@ -0,0 +1,31 @@
+import { vi } from 'vitest';
+import type { SapClientService } from '../sap/sap-client.service.js';
+import { CompanyService } from './company.service.js';
+
+describe('CompanyService', () => {
+  const make = (data: unknown) => {
+    const request = vi.fn(async () => ({ data }));
+    return { service: new CompanyService({ request } as unknown as SapClientService), request };
+  };
+
+  it('entrega solo el redondeo y el separador, sin el resto de la información de la empresa', async () => {
+    const { service, request } = make({ RoundingMethod: 'tYES', AccountSegmentsSeparator: '.', DefaultBankAccount: '192-1153365-0-50' });
+    const settings = await service.settings();
+    expect(settings).toEqual({ roundingEnabled: true, accountSegmentsSeparator: '.' });
+    expect(request).toHaveBeenCalledWith({ method: 'POST', path: 'CompanyService_GetAdminInfo', body: {} });
+  });
+
+  it('sin redondeo ni separador usa los valores por defecto', async () => {
+    const { service } = make({ RoundingMethod: 'tNO', AccountSegmentsSeparator: null });
+    expect(await service.settings()).toEqual({ roundingEnabled: false, accountSegmentsSeparator: '-' });
+  });
+
+  it('recuerda la respuesta un rato y luego la vuelve a pedir', async () => {
+    const { service, request } = make({ RoundingMethod: 'tYES' });
+    await service.settings(1000);
+    await service.settings(1000 + 60_000);
+    expect(request).toHaveBeenCalledTimes(1);
+    await service.settings(1000 + 11 * 60_000);
+    expect(request).toHaveBeenCalledTimes(2);
+  });
+});